feat: implement plasma gun and rocket swarm mechanics along with various 3D asset imports

weapons/m4.gd

@@ -14,43 +14,16 @@ func _init() -> void:
 	spread_angle = 0.01
 
 func _build_model() -> void:
-	position = Vector3(0.3, -0.3, -0.6)
-	
-	var grey_mat = StandardMaterial3D.new()
-	grey_mat.albedo_color = Color(0.25, 0.25, 0.25)
-	var dark_mat = StandardMaterial3D.new()
-	dark_mat.albedo_color = Color(0.1, 0.1, 0.1)
-	
-	# Receiver
-	var receiver = MeshInstance3D.new()
-	var rec_mesh = BoxMesh.new()
-	rec_mesh.size = Vector3(0.05, 0.14, 0.25)
-	rec_mesh.material = grey_mat
-	receiver.mesh = rec_mesh
-	receiver.position = Vector3(0, 0, 0.1)
-	model_root.add_child(receiver)
-	
-	# Barrel
-	var barrel = MeshInstance3D.new()
-	var b_mesh = CylinderMesh.new()
-	b_mesh.top_radius = 0.012
-	b_mesh.bottom_radius = 0.012
-	b_mesh.height = 0.4
-	b_mesh.material = dark_mat
-	barrel.mesh = b_mesh
-	barrel.rotation.x = deg_to_rad(90)
-	barrel.position = Vector3(0, 0.04, -0.2)
-	model_root.add_child(barrel)
-	
-	# Handguard
-	var guard = MeshInstance3D.new()
-	var g_mesh = BoxMesh.new()
-	g_mesh.size = Vector3(0.06, 0.07, 0.22)
-	g_mesh.material = dark_mat
-	guard.mesh = g_mesh
-	guard.position = Vector3(0, 0.04, -0.1)
-	model_root.add_child(guard)
-	
+	position = Vector3(0.3, -0.3, -0.656)
+
+	var model_scene = load("res://assets/weapons/m4/source/M4a4.fbx")
+	if model_scene:
+		var model = model_scene.instantiate()
+		model_root.add_child(model)
+		model.scale = Vector3(0.275, 0.275, 0.275)
+		model.rotation_degrees.y = 90
+		for light in model.find_children("*", "Light3D", true, false):
+			light.queue_free()
 	# Muzzle Flash
 	muzzle_flash = OmniLight3D.new()
 	muzzle_flash.light_color = Color(1.0, 0.8, 0.4)